package cn.jiyun.provider.utils;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Configuration
@Slf4j
	public class WebMvcConfig implements WebMvcConfigurer {

		@Override
		public void addResourceHandlers(ResourceHandlerRegistry registry) {
			//注意：由于静态资源目前不是在webapp目录下，所以放行静态资源的时候一定要有classpath
			registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
			registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
		}
	/**
	 * 扩展mvc框架的消息转换器
	 * @param converters
	 */
	@Override
	public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
		log.info("扩展消息转换器...");
		//创建消息转换器对象
		MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
		//设置对象转换器，底层使用Jackson将Java对象转为json
		messageConverter.setObjectMapper(new JacksonObjectMapper());
		//将上面的消息转换器对象追加到mvc框架的转换器集合中
		converters.add(0,messageConverter);
	}
	}